.tree>ul {
	padding-left: 10px;
}

.tree li {
	list-style-type: none;
	margin: 0;
	padding: 10px 5px 0 5px;
	position: relative;
}

.tree li::before, .tree li::after {
	content: '';
	left: -20px;
	position: absolute;
	right: auto;
}

.tree li::before {
	border-left: 1px solid #999;
	height: 100%;
	top: 0;
	width: 1px;
}

.tree li::after {
	border-top: 1px solid #999;
	top: 25px;
	width: 25px;
}

.tree-sm li::after {
	border-top: 1px solid #999;
	top: 23px;
	width: 25px;
}

.tree>ul>li::before, .tree>ul>li::after {
	border: 0;
}

.tree li:last-child::before {
	height: 25px;
}

.tree-sm li:last-child::before {
	height: 23px;
}